title: Cyclic fatigue testing of ProTaper NiTi rotary instruments after clinical use.
mesh_terms: D000704:Analysis of Variance; D003722:Dental Alloys / Q000737:chemistry; D004868:Equipment Failure; D017743:Equipment Reuse; D006801:Humans; D008422:Materials Testing; D008963:Molar; D009532:Nickel / Q000737:chemistry; D018915:Root Canal Preparation / Q000295:instrumentation*; D012399:Rotation; D013314:Stress, Mechanical; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium